WebBrowser Control的一个简单C++封装
文章转自王牌软件
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站长推荐:NSetup一键部署软件
一键式完成美化安装包制作，自动增量升级，数据统计，数字签名。应对各种复杂场景，脚本模块化拆分，常规复杂的脚本代码，图形化设置。无需专业的研发经验，轻松完成项目部署。(www.nsetup.cn)
想在自己的窗口中放上一个WebBrowser Contorl，但又不想用MFC；可惜网上除了MFC/ATL以外，使用WebBrowser的资料少得可怜。
在CodeGuru上找到Jeff Glatt 的一篇文章Display a Web Page in a Plain C Win32 Application，写成于2002年，作者的确够厚道，不但给了两份注释完整的代码（一个是exe的源文件，一个是Dll的源文件），还把如何用C一步一步实现虚函数表、接口、继承、多继承清清楚楚剖析了出来，整个一篇绝好的教你凭空（我是想说不依赖于MFC/ATL）把ActiveX控件嵌入自己窗口的指引。
Jeff Glatt的文章端的是精彩至极，但是用Pure C搞COM的确……我反正不是这块料。不过话说回来，有了这篇妙文的指引，做一个C++的包装就只需要医葫芦画瓢啦。下面就是我原样照搬的一个C++的包装类。我是把这个类做成一个Lib文件（Jeff Glatt也就lib文件没做啦），算是个“求同存异”吧。略为有点不一样的是，Jeff Glatt考虑了打开多个窗口的问题，而我的代码，一个类就一个窗体了
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下面是源代码： 类CWebBrowser： /******************************************************************** @created: 2006/01/16 @version: 0.1 @filename: WebBrowser.h @file base: WebBrowser @file ext: h @author: Pomelo Wu @purpose: Declaration for class CWebBrowser, a wrapper of IWebBrowser2. @remark: To use this class, include 'Exdisp.h' before this file. Besides, use OleInitialize instead of CoInitialize, and do not forget OleUninitialize. @revision history: -- Date Ver. Modifier Description-- 2006/01/16 0.1 Pomelo Create *********************************************************************/ #ifndef __WEBBROWSER_H__ #define __WEBBROWSER_H__ // This is for a simple C++ wrapper. There are lots more things we can control about the browser object, // but we don't do it all in this. _Many_ of the functions we provide for the browser to call, will // never actually be called by the browser in our sample. Why? Because we don't do certain things // with the browser that would require it to call those functions (even though we need to provide // at least some stub for all of the functions). // // So, for these "dummy functions" that we don't expect the browser to call, we'll just stick in some // assembly code that causes a debugger breakpoint and tells the browser object that we don't support // the functionality. That way, if we try to do more things with the browser object, and it starts // calling these "dummy functions", we'll know which ones we should add more meaningful code to. #define NOTIMPLEMENTED _ASSERT(0); return(E_NOTIMPL) //============================================================================= /* @class CWebBrowser @author Pomelo Wu @brief A wrapper class of IWebBrowser2 interface. */ //============================================================================= class CWebBrowser { public: // Constructor CWebBrowser(void); // Destructor ~CWebBrowser(void); private: // Data members IOleObject *m_pBrowserObj; public: // Interfaces /*************************** UnEmbedBrowserObject() ************************ * Called to detach the browser object from our host window, and free its * resources, right before we destroy our window. * * hwnd = Handle to the window hosting the browser object. * * NOTE: The pointer to the browser object must have been stored in the * window's USERDATA field. In other words, don't call UnEmbedBrowserObject(). * with a HWND that wasn't successfully passed to EmbedBrowserObject(). */ void UnEmbedBrowserObject(HWND /*hwnd*/); /***************************** EmbedBrowserObject() ************************** * Puts the browser object inside our host window, and save a pointer to this * window's browser object in the window's GWL_USERDATA field. * * hwnd = Handle of our window into which we embed the browser object. * * RETURNS: 0 if success, or non-zero if an error. * * NOTE: We tell the browser object to occupy the entire client area of the * window. * * NOTE: No HTML page will be displayed here. We can do that with a subsequent * call to either DisplayHTMLPage() or DisplayHTMLStr(). This is merely once-only * initialization for using the browser object. In a nutshell, what we do * here is get a pointer to the browser object in our window's GWL_USERDATA * so we can access that object's functions whenever we want. */ long EmbedBrowserObject(HWND hwnd); /******************************* DisplayHTMLPage() **************************** * Displays a URL, or HTML file on disk. * * hwnd = Handle to the window hosting the browser object. * webPageName = Pointer to nul-terminated name of the URL/file. * * RETURNS: 0 if success, or non-zero if an error. * * NOTE: EmbedBrowserObject() must have been successfully called once with the * specified window, prior to calling this function. You need call * EmbedBrowserObject() once only, and then you can make multiple calls to * this function to display numerous pages in the specified window. */ long DisplayHTMLPage(HWND /*hwnd*/, LPCTSTR webPageName); /******************************* DisplayHTMLStr() **************************** * Takes a string containing some HTML BODY, and displays it in the specified * window. For example, perhaps you want to display the HTML text of... * * <P>This is a picture.<P><IMG src="mypic.jpg"> * * hwnd = Handle to the window hosting the browser object. * string = Pointer to nul-terminated string containing the HTML BODY. * (NOTE: No <BODY></BODY> tags are required in the string). * * RETURNS: 0 if success, or non-zero if an error. * * NOTE: EmbedBrowserObject() must have been successfully called once with the * specified window, prior to calling this function. You need call * EmbedBrowserObject() once only, and then you can make multiple calls to * this function to display numerous pages in the specified window. */ long DisplayHTMLStr(HWND /*hwnd*/, LPCTSTR string); private: // Methods }; #endif //__WEBBROWSER_H__ /******************************************************************** @created: 2006/01/16 @version: 0.1 @filename: WebBrowser.cpp @file base: WebBrowser @file ext: cpp @author: Pomelo Wu @purpose: Implementation for class CWebBrowser, a wrapper of IWebBrowser2. @remark: NULL @revision history: -- Date Ver. Modifier Description-- 2006/01/16 0.1 Pomelo Create *********************************************************************/ #include <Exdisp.h> /* Defines of stuff like IWebBrowser2. This is an include file with Visual C 6 and above */ #include <Mshtml.h> /* Defines of stuff like IHTMLDocument2. This is an include file with Visual C 6 and above */ /* If you gets some error when compling under VS2005, move mshtml.h to top*/ #include <crtdbg.h> /* for _ASSERT() */ #include "WBStorage.h" #include "WBClientsite.h" #include "WebBrowser.h" #include "Global.h" /* This is used by DisplayHTMLStr(). It can be global because we never change it. */ static const SAFEARRAYBOUND ArrayBound = {1, 0}; CWebBrowser::CWebBrowser(void) { m_pBrowserObj = NULL; } CWebBrowser::~CWebBrowser(void) { } void CWebBrowser::UnEmbedBrowserObject(HWND /*hwnd*/) { ////////////////////////////////////////////////////////////////////////// // // Not implemented for multiple browsing... // //IOleObject **ppBrowserHandle; //IOleObject *pBrowserObject; // //// Retrieve the browser object's pointer we stored in our window's GWL_USERDATA when //// we initially attached the browser object to this window. //if ((ppBrowserHandle = (IOleObject **)GetWindowLong(hwnd, GWL_USERDATA))) //{ // // Unembed the browser object, and release its resources. // pBrowserObject = *ppBrowserHandle; // pBrowserObject->Close(OLECLOSE_NOSAVE); // pBrowserObject->Release(); //} ////////////////////////////////////////////////////////////////////////// if (m_pBrowserObj) { // Unembed the browser object, and release its resources. m_pBrowserObj->Close(OLECLOSE_NOSAVE); m_pBrowserObj->Release(); return; } // You must have called this for a window that wasn't successfully passed to EmbedBrowserObject(). // Bad boy! _ASSERT(0); } long CWebBrowser::DisplayHTMLStr(HWND /*hwnd*/, LPCTSTR string) { IWebBrowser2 *pWebBrowser2; LPDISPATCH lpDispatch; IHTMLDocument2 *pHtmlDoc2; SAFEARRAY *psfArray; VARIANT varMyURL; VARIANT *pVar; BSTR bstr; // Assume an error. bstr = 0; ////////////////////////////////////////////////////////////////////////// // // Not implemented for multiple browsing... // //IOleObject **ppBrowserHandle; //IOleObject *pBrowserObject; // //// Retrieve the browser object's pointer we stored in our window's GWL_USERDATA when //// we initially attached the browser object to this window. //if ((ppBrowserHandle = (IOleObject **)GetWindowLong(hwnd, GWL_USERDATA))) //{ // // Unembed the browser object, and release its resources. // pBrowserObject = *ppBrowserHandle; //} ////////////////////////////////////////////////////////////////////////// // We want to get the base address (ie, a pointer) to the IWebBrowser2 object embedded within the browser // object, so we can call some of the functions in the former's table. if (!m_pBrowserObj->QueryInterface(IID_IWebBrowser2, (void**)&pWebBrowser2)) { // Before we can get_Document(), we actually need to have some HTML page loaded in the browser. So, // let's load an empty HTML page. Then, once we have that empty page, we can get_Document() and // write() to stuff our HTML string into it. VariantInit(&varMyURL); varMyURL.vt = VT_BSTR; varMyURL.bstrVal = SysAllocString(L"about:blank"); // Call the Navigate2() function to actually display the page. pWebBrowser2->Navigate2(&varMyURL, 0, 0, 0, 0); // Free any resources (including the BSTR). VariantClear(&varMyURL); // Call the IWebBrowser2 object's get_Document so we can get its DISPATCH object. I don't know why you // don't get the DISPATCH object via the browser object's QueryInterface(), but you don't. if (!pWebBrowser2->get_Document(&lpDispatch)) { // We want to get a pointer to the IHTMLDocument2 object embedded within the DISPATCH // object, so we can call some of the functions in the former's table. if (!lpDispatch->QueryInterface(IID_IHTMLDocument2, (void**)&pHtmlDoc2)) { // Our HTML must be in the form of a BSTR. And it must be passed to write() in an // array of "VARIENT" structures. So let's create all that. if ((psfArray = SafeArrayCreate(VT_VARIANT, 1, (SAFEARRAYBOUND *)&ArrayBound))) { if (!SafeArrayAccessData(psfArray, (void**)&pVar)) { pVar->vt = VT_BSTR; #ifndef UNICODE { wchar_t *buffer; DWORD size; size = MultiByteToWideChar(CP_ACP, 0, string, -1, 0, 0); if (!(buffer = (wchar_t *)GlobalAlloc(GMEM_FIXED, sizeof(wchar_t) * size))) goto bad; MultiByteToWideChar(CP_ACP, 0, string, -1, buffer, size); bstr = SysAllocString(buffer); GlobalFree(buffer); } #else bstr = SysAllocString(string); #endif // Store our BSTR pointer in the VARIENT. if ((pVar->bstrVal = bstr)) { // Pass the VARIENT with its BSTR to write() in order to shove our desired HTML string // into the body of that empty page we created above. pHtmlDoc2->write(psfArray); // Normally, we'd need to free our BSTR, but SafeArrayDestroy() does it for us // SysFreeString(bstr); } } // Free the array. This also frees the VARIENT that SafeArrayAccessData created for us, // and even frees the BSTR we allocated with SysAllocString SafeArrayDestroy(psfArray); } // Release the IHTMLDocument2 object. #ifndef UNICODE bad: #endif pHtmlDoc2->Release(); } // Release the DISPATCH object. lpDispatch->Release(); } // Release the IWebBrowser2 object. pWebBrowser2->Release(); } // No error? if (bstr) return 0; // An error return -1; } long CWebBrowser::DisplayHTMLPage(HWND /*hwnd*/, LPCTSTR webPageName) { IWebBrowser2 *pWebBrowser2; VARIANT varMyURL; ////////////////////////////////////////////////////////////////////////// // // Not implemented for multiple browsing... // //IOleObject **ppBrowserHandle; //IOleObject *pBrowserObject; // //// Retrieve the browser object's pointer we stored in our window's GWL_USERDATA when //// we initially attached the browser object to this window. //if ((ppBrowserHandle = (IOleObject **)GetWindowLong(hwnd, GWL_USERDATA))) //{ // // Unembed the browser object, and release its resources. // pBrowserObject = *ppBrowserHandle; //} ////////////////////////////////////////////////////////////////////////// // We want to get the base address (ie, a pointer) to the IWebBrowser2 object embedded within the browser // object, so we can call some of the functions in the former's table. if (!m_pBrowserObj->QueryInterface(IID_IWebBrowser2, (void**)&pWebBrowser2)) { // Our URL (ie, web address, such as "http://www.microsoft.com" or an HTM filename on disk // such as "c:/myfile.htm") must be passed to the IWebBrowser2's Navigate2() function as a BSTR. // A BSTR is like a pascal version of a double-byte character string. In other words, the // first unsigned short is a count of how many characters are in the string, and then this // is followed by those characters, each expressed as an unsigned short (rather than a // char). The string is not nul-terminated. The OS function SysAllocString can allocate and // copy a UNICODE C string to a BSTR. Of course, we'll need to free that BSTR after we're done // with it. If we're not using UNICODE, we first have to convert to a UNICODE string. // // What's more, our BSTR needs to be stuffed into a VARIENT struct, and that VARIENT struct is // then passed to Navigate2(). Why? The VARIENT struct makes it possible to define generic // 'datatypes' that can be used with all languages. Not all languages support things like // nul-terminated C strings. So, by using a VARIENT, whose first field tells what sort of // data (ie, string, float, etc) is in the VARIENT, COM interfaces can be used by just about // any language. VariantInit(&varMyURL); varMyURL.vt = VT_BSTR; #ifndef UNICODE { wchar_t *buffer; DWORD size; size = MultiByteToWideChar(CP_ACP, 0, webPageName, -1, 0, 0); if (!(buffer = (wchar_t *)GlobalAlloc(GMEM_FIXED, sizeof(wchar_t) * size))) goto badalloc; MultiByteToWideChar(CP_ACP, 0, webPageName, -1, buffer, size); varMyURL.bstrVal = SysAllocString(buffer); GlobalFree(buffer); } #else varMyURL.bstrVal = SysAllocString(webPageName); #endif if (!varMyURL.bstrVal) { #ifndef UNICODE badalloc: #endif pWebBrowser2->Release(); return -6; } // Call the Navigate2() function to actually display the page. pWebBrowser2->Navigate2(&varMyURL, 0, 0, 0, 0); // Free any resources (including the BSTR we allocated above). VariantClear(&varMyURL); // We no longer need the IWebBrowser2 object (ie, we don't plan to call any more functions in it, // so we can release our hold on it). Note that we'll still maintain our hold on the browser // object. pWebBrowser2->Release(); // Success return 0; } // failed return -5; } long CWebBrowser::EmbedBrowserObject(HWND hwnd) { IWebBrowser2 *pWebBrowser2; RECT rect; CWBStorage Storage; CWBClientSite *pClientSite = new CWBClientSite(hwnd); // Get a pointer to the browser object and lock it down (so it doesn't "disappear" while we're using // it in this program). We do this by calling the OS function OleCreate(). // // NOTE: We need this pointer to interact with and control the browser. With normal WIN32 controls such as a // Static, Edit, Combobox, etc, you obtain an HWND and send messages to it with SendMessage(). Not so with // the browser object. You need to get a pointer to its base class (as returned by OleCreate()). // // For example, the browser object happens to have a SetHostNames() function we want to call. So, after we // retrieve the pointer to the browser object (in a local we'll name 'm_pBrowserObj'), then we can call that // function, and pass it args, as so: // // m_pBrowserObj->SetHostNames(SomeString, SomeString); if (!OleCreate(CLSID_WebBrowser, IID_IOleObject, OLERENDER_DRAW, 0, (IOleClientSite *)pClientSite, &Storage, (void**)&m_pBrowserObj)) { ////////////////////////////////////////////////////////////////////////// // // Not implemented for multiple browsing... // // Ok, we now have the pointer to the browser object in 'browserObject'. Let's save this in the // memory block we allocated above, and then save the pointer to that whole thing in our window's // USERDATA field. That way, if we need multiple windows each hosting its own browser object, we can // call EmbedBrowserObject() for each one, and easily associate the appropriate browser object with // its matching window and its own objects containing per-window data. //IOleObject **ppObj = &m_pBrowserObj; //SetWindowLong(hwnd, GWL_USERDATA, (LONG)ppObj); ////////////////////////////////////////////////////////////////////////// // We can now call the browser object's SetHostNames function. SetHostNames lets the browser object know our // application's name and the name of the document in which we're embedding the browser. (Since we have no // document name, we'll pass a 0 for the latter). When the browser object is opened for editing, it displays // these names in its titlebar. // // We are passing 2 args to SetHostNames. Oh yeah, the L is because we need UNICODE strings. // And BTW, the host and document names can be anything you want. m_pBrowserObj->SetHostNames(L"My Host Name", 0); GetClientRect(hwnd, &rect); // Let browser object know that it is embedded in an OLE container. if (!OleSetContainedObject((IUnknown *)m_pBrowserObj, TRUE)) { // Set the display area of our browser control the same as our window's size // and actually put the browser object into our window. if (!m_pBrowserObj->DoVerb(OLEIVERB_SHOW, NULL, (IOleClientSite *)pClientSite, -1, hwnd, &rect)) { // We want to get the base address (ie, a pointer) to the IWebBrowser2 object embedded within the browser // object, so we can call some of the functions in the former's table. For example, one IWebBrowser2 function // we intend to call below will be Navigate2(). So we call the browser object's QueryInterface to get our // pointer to the IWebBrowser2 object. if (!m_pBrowserObj->QueryInterface(IID_IWebBrowser2, (void**)&pWebBrowser2)) { // Let's call several functions in the IWebBrowser2 object to position the browser display area // in our window. The functions we call are put_Left(), put_Top(), put_Width(), and put_Height(). pWebBrowser2->put_Left(0); pWebBrowser2->put_Top(0); pWebBrowser2->put_Width(rect.right); pWebBrowser2->put_Height(rect.bottom); // We no longer need the IWebBrowser2 object (ie, we don't plan to call any more functions in it // right now, so we can release our hold on it). Note that we'll still maintain our hold on the // browser object until we're done with that object. pWebBrowser2->Release(); // Success return 0; } // Something went wrong! // QueryInterface failed } // DoVerb Failed } // OleSetContainedObject failed if (pClientSite) { delete pClientSite; } UnEmbedBrowserObject(hwnd); return -3; } return -2; } 类CWBStorage： /******************************************************************** @created: 2005/12/30 @version: 0.1 @filename: WBStorage.h @file base: WBStorage @file ext: h @author: Pomelo Wu @purpose: CWBStorage, a class of implementation of IStorage @remark: NULL @revision history: -- Date Ver. Modifier Description-- 2006/01/16 0.1 Pomelo Create *********************************************************************/ #ifndef __WBSTORAGE_H__ #define __WBSTORAGE_H__ #include <objidl.h> class CWBStorage : public IStorage { public: // IUnknown methods virtual HRESULT STDMETHODCALLTYPE QueryInterface( /* [in] */ REFIID riid, /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject); virtual ULONG STDMETHODCALLTYPE AddRef( void); virtual ULONG STDMETHODCALLTYPE Release( void); // IStorage methods virtual HRESULT STDMETHODCALLTYPE CreateStream( /* [string][in] */ const OLECHAR *pwcsName, /* [in] */ DWORD grfMode, /* [in] */ DWORD reserved1, /* [in] */ DWORD reserved2, /* [out] */ IStream **ppstm); virtual /* [local] */ HRESULT STDMETHODCALLTYPE OpenStream( /* [string][in] */ const OLECHAR *pwcsName, /* [unique][in] */ void *reserved1, /* [in] */ DWORD grfMode, /* [in] */ DWORD reserved2, /* [out] */ IStream **ppstm); virtual HRESULT STDMETHODCALLTYPE CreateStorage( /* [string][in] */ const OLECHAR *pwcsName, /* [in] */ DWORD grfMode, /* [in] */ DWORD reserved1, /* [in] */ DWORD reserved2, /* [out] */ IStorage **ppstg); virtual HRESULT STDMETHODCALLTYPE OpenStorage( /* [string][unique][in] */ const OLECHAR *pwcsName, /* [unique][in] */ IStorage *pstgPriority, /* [in] */ DWORD grfMode, /* [unique][in] */ SNB snbExclude, /* [in] */ DWORD reserved, /* [out] */ IStorage **ppstg); virtual HRESULT STDMETHODCALLTYPE CopyTo( /* [in] */ DWORD ciidExclude, /* [size_is][unique][in] */ const IID *rgiidExclude, /* [unique][in] */ SNB snbExclude, /* [unique][in] */ IStorage *pstgDest); virtual HRESULT STDMETHODCALLTYPE MoveElementTo( /* [string][in] */ const OLECHAR *pwcsName, /* [unique][in] */ IStorage *pstgDest, /* [string][in] */ const OLECHAR *pwcsNewName, /* [in] */ DWORD grfFlags); virtual HRESULT STDMETHODCALLTYPE Commit( /* [in] */ DWORD grfCommitFlags); virtual HRESULT STDMETHODCALLTYPE Revert( void); virtual /* [local] */ HRESULT STDMETHODCALLTYPE EnumElements( /* [in] */ DWORD reserved1, /* [size_is][unique][in] */ void *reserved2, /* [in] */ DWORD reserved3, /* [out] */ IEnumSTATSTG **ppenum); virtual HRESULT STDMETHODCALLTYPE DestroyElement( /* [string][in] */ const OLECHAR *pwcsName); virtual HRESULT STDMETHODCALLTYPE RenameElement( /* [string][in] */ const OLECHAR *pwcsOldName, /* [string][in] */ const OLECHAR *pwcsNewName); virtual HRESULT STDMETHODCALLTYPE SetElementTimes( /* [string][unique][in] */ const OLECHAR *pwcsName, /* [unique][in] */ const FILETIME *pctime, /* [unique][in] */ const FILETIME *patime, /* [unique][in] */ const FILETIME *pmtime); virtual HRESULT STDMETHODCALLTYPE SetClass( /* [in] */ REFCLSID clsid); virtual HRESULT STDMETHODCALLTYPE SetStateBits( /* [in] */ DWORD grfStateBits, /* [in] */ DWORD grfMask); virtual HRESULT STDMETHODCALLTYPE Stat( /* [out] */ STATSTG *pstatstg, /* [in] */ DWORD grfStatFlag); }; #endif //__WBSTORAGE_H__ /******************************************************************** @created: 2006/01/16 @version: 0.1 @filename: WBStorage.cpp @file base: WBStorage @file ext: cpp @author: Pomelo Wu @purpose: Implementation for class CWBStorage @remark: NULL @revision history: -- Date Ver. Modifier Description-- 2006/01/16 0.1 Pomelo Create *********************************************************************/ #include "WBStorage.h" ////////////////////////////////////// CWBStorage functions ///////////////////////////////////////// // NOTE: The browser object doesn't use the IStorage functions, so most of these are us just returning // E_NOTIMPL so that anyone who *does* call these functions knows nothing is being done here. HRESULT STDMETHODCALLTYPE CWBStorage::QueryInterface( /* [in] */ REFIID riid, /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject) { NOTIMPLEMENTED; } ULONG STDMETHODCALLTYPE CWBStorage::AddRef( void) { return 1; } ULONG STDMETHODCALLTYPE CWBStorage::Release( void) { return 0; } HRESULT STDMETHODCALLTYPE CWBStorage::CreateStream( /* [string][in] */ const OLECHAR *pwcsName, /* [in] */ DWORD grfMode, /* [in] */ DWORD reserved1, /* [in] */ DWORD reserved2, /* [out] */ IStream **ppstm) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::OpenStream( /* [string][in] */ const OLECHAR *pwcsName, /* [unique][in] */ void *reserved1, /* [in] */ DWORD grfMode, /* [in] */ DWORD reserved2, /* [out] */ IStream **ppstm) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::CreateStorage( /* [string][in] */ const OLECHAR *pwcsName, /* [in] */ DWORD grfMode, /* [in] */ DWORD reserved1, /* [in] */ DWORD reserved2, /* [out] */ IStorage **ppstg) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::OpenStorage( /* [string][unique][in] */ const OLECHAR *pwcsName, /* [unique][in] */ IStorage *pstgPriority, /* [in] */ DWORD grfMode, /* [unique][in] */ SNB snbExclude, /* [in] */ DWORD reserved, /* [out] */ IStorage **ppstg) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::CopyTo( /* [in] */ DWORD ciidExclude, /* [size_is][unique][in] */ const IID *rgiidExclude, /* [unique][in] */ SNB snbExclude, /* [unique][in] */ IStorage *pstgDest) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::MoveElementTo( /* [string][in] */ const OLECHAR *pwcsName, /* [unique][in] */ IStorage *pstgDest, /* [string][in] */ const OLECHAR *pwcsNewName, /* [in] */ DWORD grfFlags) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::Commit( /* [in] */ DWORD grfCommitFlags) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::Revert( void) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::EnumElements( /* [in] */ DWORD reserved1, /* [size_is][unique][in] */ void *reserved2, /* [in] */ DWORD reserved3, /* [out] */ IEnumSTATSTG **ppenum) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::DestroyElement( /* [string][in] */ const OLECHAR *pwcsName) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::RenameElement( /* [string][in] */ const OLECHAR *pwcsOldName, /* [string][in] */ const OLECHAR *pwcsNewName) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::SetElementTimes( /* [string][unique][in] */ const OLECHAR *pwcsName, /* [unique][in] */ const FILETIME *pctime, /* [unique][in] */ const FILETIME *patime, /* [unique][in] */ const FILETIME *pmtime) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::SetClass( /* [in] */ REFCLSID clsid) { //NOTIMPLEMENTED; return(S_OK); } HRESULT STDMETHODCALLTYPE CWBStorage::SetStateBits( /* [in] */ DWORD grfStateBits, /* [in] */ DWORD grfMask) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBStorage::Stat( /* [out] */ STATSTG *pstatstg, /* [in] */ DWORD grfStatFlag) { NOTIMPLEMENTED; } 类CWBClientSite： /******************************************************************** @created: 2006/01/16 @version: 0.1 @filename: WBClientSite.h @file base: WBClientSite @file ext: h @author: Pomelo Wu @purpose: Declaration for class CWBClientSite, a implemetation of interface IOleClientSite, IOleInPlaceFrame and IOleInPlaceSite @remark: NULL @revision history: -- Date Ver. Modifier Description-- 2006/01/16 0.1 Pomelo Create *********************************************************************/ #ifndef __WBCLIENTSITE_H__ #define __WBCLIENTSITE_H__ #include <oleidl.h> class CWBClientSite : public IOleClientSite, public IOleInPlaceFrame, public IOleInPlaceSite { public: // constructors CWBClientSite() {} CWBClientSite(HWND hwnd) { m_hWindow = hwnd; } // // IUnknown methods // virtual HRESULT STDMETHODCALLTYPE QueryInterface( /* [in] */ REFIID riid, /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject); virtual ULONG STDMETHODCALLTYPE AddRef( void); virtual ULONG STDMETHODCALLTYPE Release( void); // // IOleClientSite methods // virtual HRESULT STDMETHODCALLTYPE SaveObject( void); virtual HRESULT STDMETHODCALLTYPE GetMoniker( /* [in] */ DWORD dwAssign, /* [in] */ DWORD dwWhichMoniker, /* [out] */ IMoniker **ppmk); virtual HRESULT STDMETHODCALLTYPE GetContainer( /* [out] */ IOleContainer **ppContainer); virtual HRESULT STDMETHODCALLTYPE ShowObject( void); virtual HRESULT STDMETHODCALLTYPE OnShowWindow( /* [in] */ BOOL fShow); virtual HRESULT STDMETHODCALLTYPE RequestNewObjectLayout( void); // // IOleWindow methods // virtual /* [input_sync] */ HRESULT STDMETHODCALLTYPE GetWindow( /* [out] */ HWND *phwnd); virtual HRESULT STDMETHODCALLTYPE ContextSensitiveHelp( /* [in] */ BOOL fEnterMode); // // IOleInPlaceUIWindow methods // virtual /* [input_sync] */ HRESULT STDMETHODCALLTYPE GetBorder( /* [out] */ LPRECT lprectBorder); virtual /* [input_sync] */ HRESULT STDMETHODCALLTYPE RequestBorderSpace( /* [unique][in] */ LPCBORDERWIDTHS pborderwidths); virtual /* [input_sync] */ HRESULT STDMETHODCALLTYPE SetBorderSpace( /* [unique][in] */ LPCBORDERWIDTHS pborderwidths); virtual HRESULT STDMETHODCALLTYPE SetActiveObject( /* [unique][in] */ IOleInPlaceActiveObject *pActiveObject, /* [unique][string][in] */ LPCOLESTR pszObjName); // // IOleInPlaceFrame methods // virtual HRESULT STDMETHODCALLTYPE InsertMenus( /* [in] */ HMENU hmenuShared, /* [out][in] */ LPOLEMENUGROUPWIDTHS lpMenuWidths); virtual /* [input_sync] */ HRESULT STDMETHODCALLTYPE SetMenu( /* [in] */ HMENU hmenuShared, /* [in] */ HOLEMENU holemenu, /* [in] */ HWND hwndActiveObject); virtual HRESULT STDMETHODCALLTYPE RemoveMenus( /* [in] */ HMENU hmenuShared); virtual /* [input_sync] */ HRESULT STDMETHODCALLTYPE SetStatusText( /* [unique][in] */ LPCOLESTR pszStatusText); virtual HRESULT STDMETHODCALLTYPE EnableModeless( /* [in] */ BOOL fEnable); virtual HRESULT STDMETHODCALLTYPE TranslateAccelerator( /* [in] */ LPMSG lpmsg, /* [in] */ WORD wID); // // IOleInPlaceSite methods // virtual HRESULT STDMETHODCALLTYPE CanInPlaceActivate( void); virtual HRESULT STDMETHODCALLTYPE OnInPlaceActivate( void); virtual HRESULT STDMETHODCALLTYPE OnUIActivate( void); virtual HRESULT STDMETHODCALLTYPE GetWindowContext( /* [out] */ IOleInPlaceFrame **ppFrame, /* [out] */ IOleInPlaceUIWindow **ppDoc, /* [out] */ LPRECT lprcPosRect, /* [out] */ LPRECT lprcClipRect, /* [out][in] */ LPOLEINPLACEFRAMEINFO lpFrameInfo); virtual HRESULT STDMETHODCALLTYPE Scroll( /* [in] */ SIZE scrollExtant); virtual HRESULT STDMETHODCALLTYPE OnUIDeactivate( /* [in] */ BOOL fUndoable); virtual HRESULT STDMETHODCALLTYPE OnInPlaceDeactivate( void); virtual HRESULT STDMETHODCALLTYPE DiscardUndoState( void); virtual HRESULT STDMETHODCALLTYPE DeactivateAndUndo( void); virtual HRESULT STDMETHODCALLTYPE OnPosRectChange( /* [in] */ LPCRECT lprcPosRect); /* ////////////////////////////////////////////////// // We don't want those functions to access global // variables, because then we couldn't use more // than one browser object. (ie, we couldn't have // multiple windows, each with its own embedded // browser object to display a different web page). // // So here is where I added my extra HWND that the // CWBIOleInPlaceFrame function Frame_GetWindow() needs // to access. ////////////////////////////////////////////////// */ HWND m_hWindow; }; #endif //__WBCLIENTSITE_H__ /******************************************************************** @created: 2006/01/16 @version: 0.1 @filename: WBClientSite.cpp @file base: WBClientSite @file ext: cpp @author: Pomelo Wu @purpose: Implementation for class CWBClientSite @remark: NULL @revision history: -- Date Ver. Modifier Description-- 2006/01/16 0.1 Pomelo Create *********************************************************************/ #include "WBClientSite.h" // Implementation of CWBClientSite, a derived class of IOleClientSite, IOleInPlaceFrame, and IOleInPlaceSite HRESULT STDMETHODCALLTYPE CWBClientSite::QueryInterface( /* [in] */ REFIID riid, /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject) { // query the interface of IUnknown if (!memcmp(&riid, &IID_IUnknown, sizeof(GUID))) { *ppvObject = reinterpret_cast<IUnknown *> (this); } // query the interface of IOleClientSite else if (!memcmp(&riid, &IID_IOleClientSite, sizeof(GUID))) { *ppvObject = (IOleClientSite *)this; } // query the interface of IOleInPlaceSite else if (!memcmp(&riid, &IID_IOleInPlaceSite, sizeof(GUID))) { *ppvObject = (IOleInPlaceSite *)this; } // For other types of objects the browser wants, just report that we don't have any such objects. // NOTE: If you want to add additional functionality to your browser hosting, you may need to // provide some more objects here. You'll have to investigate what the browser is asking for // (ie, what REFIID it is passing). else { *ppvObject = 0; return(E_NOINTERFACE); } return(S_OK); } ULONG STDMETHODCALLTYPE CWBClientSite::AddRef( void) { return 1; } ULONG STDMETHODCALLTYPE CWBClientSite::Release( void) { return 0; } // IOleClientSite methods HRESULT STDMETHODCALLTYPE CWBClientSite::SaveObject( void) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::GetMoniker( /* [in] */ DWORD dwAssign, /* [in] */ DWORD dwWhichMoniker, /* [out] */ IMoniker **ppmk) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::GetContainer( /* [out] */ IOleContainer **ppContainer) { // Tell the browser that we are a simple object and don't support a container *ppContainer = 0; return(E_NOINTERFACE); } HRESULT STDMETHODCALLTYPE CWBClientSite::ShowObject( void) { return(NOERROR); } HRESULT STDMETHODCALLTYPE CWBClientSite::OnShowWindow( /* [in] */ BOOL fShow) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::RequestNewObjectLayout( void) { NOTIMPLEMENTED; } // IOleWindow methods HRESULT STDMETHODCALLTYPE CWBClientSite::GetWindow( /* [out] */ HWND *phwnd) { *phwnd = m_hWindow; return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::ContextSensitiveHelp( /* [in] */ BOOL fEnterMode) { NOTIMPLEMENTED; } // IOleInPlaceUIWindow methods HRESULT STDMETHODCALLTYPE CWBClientSite::GetBorder( /* [out] */ LPRECT lprectBorder) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::RequestBorderSpace( /* [unique][in] */ LPCBORDERWIDTHS pborderwidths) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::SetBorderSpace( /* [unique][in] */ LPCBORDERWIDTHS pborderwidths) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::SetActiveObject( /* [unique][in] */ IOleInPlaceActiveObject *pActiveObject, /* [unique][string][in] */ LPCOLESTR pszObjName) { return S_OK; } // IOleInPlaceFrame methods HRESULT STDMETHODCALLTYPE CWBClientSite::InsertMenus( /* [in] */ HMENU hmenuShared, /* [out][in] */ LPOLEMENUGROUPWIDTHS lpMenuWidths) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::SetMenu( /* [in] */ HMENU hmenuShared, /* [in] */ HOLEMENU holemenu, /* [in] */ HWND hwndActiveObject) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::RemoveMenus( /* [in] */ HMENU hmenuShared) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::SetStatusText( /* [unique][in] */ LPCOLESTR pszStatusText) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::EnableModeless( /* [in] */ BOOL fEnable) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::TranslateAccelerator( /* [in] */ LPMSG lpmsg, /* [in] */ WORD wID) { NOTIMPLEMENTED; } // IOleInPlaceSite methods HRESULT STDMETHODCALLTYPE CWBClientSite::CanInPlaceActivate( void) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::OnInPlaceActivate( void) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::OnUIActivate( void) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::GetWindowContext( /* [out] */ IOleInPlaceFrame **ppFrame, /* [out] */ IOleInPlaceUIWindow **ppDoc, /* [out] */ LPRECT lprcPosRect, /* [out] */ LPRECT lprcClipRect, /* [out][in] */ LPOLEINPLACEFRAMEINFO lpFrameInfo) { *ppFrame = (IOleInPlaceFrame *)this; // maybe incorrect // We have no OLEINPLACEUIWINDOW *ppDoc = 0; // Fill in some other info for the browser lpFrameInfo->fMDIApp = FALSE; lpFrameInfo->hwndFrame = m_hWindow; // maybe incorrect lpFrameInfo->haccel = 0; lpFrameInfo->cAccelEntries = 0; // Give the browser the dimensions of where it can draw. We give it our entire window to fill GetClientRect(lpFrameInfo->hwndFrame, lprcPosRect); GetClientRect(lpFrameInfo->hwndFrame, lprcClipRect); return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::Scroll( /* [in] */ SIZE scrollExtant) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::OnUIDeactivate( /* [in] */ BOOL fUndoable) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::OnInPlaceDeactivate( void) { return S_OK; } HRESULT STDMETHODCALLTYPE CWBClientSite::DiscardUndoState( void) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::DeactivateAndUndo( void) { NOTIMPLEMENTED; } HRESULT STDMETHODCALLTYPE CWBClientSite::OnPosRectChange( /* [in] */ LPCRECT lprcPosRect) { return S_OK; } 调用示例： // Sample.cpp : Defines the entry point for the application. // #include "stdafx.h" #include "Resource.h" #include <mshtml.h> // Defines of stuff like IHTMLDocument2. This is an include file with Visual C 6 and above #include <exdisp.h> // Defines of stuff like IWebBrowser2. This is an include file with Visual C 6 and above #include "WebBrowser.h" #pragma comment (lib, "webbrowser.lib") CWebBrowser *g_pWebBrowser = NULL; #define MAX_LOADSTRING 100 // Global Variables: HINSTANCE hInst; // current instance TCHAR szTitle[MAX_LOADSTRING]; // The title bar text TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name // Forward declarations of functions included in this code module: ATOM MyRegisterClass(HINSTANCE hInstance); BOOL InitInstance(HINSTANCE, int); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM); int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) { UNREFERENCED_PARAMETER(hPrevInstance); UNREFERENCED_PARAMETER(lpCmdLine); // TODO: Place code here. MSG msg; HACCEL hAccelTable; // COM initialization OleInitialize(NULL); // Initialize global strings LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_IEMINI, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // Perform application initialization: if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_IEMINI)); // Main message loop: while (GetMessage(&msg, NULL, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } OleUninitialize(); return (int) msg.wParam; } // // FUNCTION: MyRegisterClass() // // PURPOSE: Registers the window class. // // COMMENTS: // // This function and its usage are only necessary if you want this code // to be compatible with Win32 systems prior to the 'RegisterClassEx' // function that was added to Windows 95. It is important to call this function // so that the application will get 'well formed' small icons associated // with it. // ATOM MyRegisterClass(HINSTANCE hInstance) { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_IEMINI)); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = MAKEINTRESOURCE(IDC_IEMINI); wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL)); return RegisterClassEx(&wcex); } // // FUNCTION: InitInstance(HINSTANCE, int) // // PURPOSE: Saves instance handle and creates main window // // COMMENTS: // // In this function, we save the instance handle in a global variable and // create and display the main program window. // BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) { HWND hWnd; hInst = hInstance; // Store instance handle in our global variable hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE; } // // FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM) // // PURPOSE: Processes messages for the main window. // // WM_COMMAND - process the application menu // WM_PAINT - Paint the main window // WM_DESTROY - post a quit message and return // // LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { int wmId, wmEvent; PAINTSTRUCT ps; HDC hdc; switch (message) { case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // Parse the menu selections: switch (wmId) { case IDM_ABOUT: //DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About); if (g_pWebBrowser) { g_pWebBrowser->DisplayHTMLPage(hWnd, L"http://www.microsoft.com"); } break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_PAINT: hdc = BeginPaint(hWnd, &ps); // TODO: Add any drawing code here... EndPaint(hWnd, &ps); break; case WM_DESTROY: PostQuitMessage(0); if (g_pWebBrowser) { g_pWebBrowser->UnEmbedBrowserObject(hWnd); delete g_pWebBrowser; } break; case WM_CREATE: g_pWebBrowser = new CWebBrowser; if (g_pWebBrowser) g_pWebBrowser->EmbedBrowserObject(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0; } // Message handler for about box. INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { UNREFERENCED_PARAMETER(lParam); switch (message) { case WM_INITDIALOG: return (INT_PTR)TRUE; case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { EndDialog(hDlg, LOWORD(wParam)); return (INT_PTR)TRUE; } break; } return (INT_PTR)FALSE; } BTW，没有做异常处理。 |
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